CN208236074U - Power transmission tower elastic telescopic sliding sleeve cross-arm - Google Patents
Power transmission tower elastic telescopic sliding sleeve cross-arm Download PDFInfo
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- CN208236074U CN208236074U CN201820700955.1U CN201820700955U CN208236074U CN 208236074 U CN208236074 U CN 208236074U CN 201820700955 U CN201820700955 U CN 201820700955U CN 208236074 U CN208236074 U CN 208236074U
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- sliding sleeve
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 22
- 239000012212 insulator Substances 0.000 claims abstract description 7
- 238000005192 partition Methods 0.000 claims description 9
- 230000000694 effects Effects 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 229920001971 elastomer Polymers 0.000 claims description 2
- 239000000806 elastomer Substances 0.000 claims description 2
- 230000005611 electricity Effects 0.000 abstract description 7
- 230000006378 damage Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000010534 mechanism of action Effects 0.000 description 2
- 239000012211 strain insulator Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- 239000002436 steel type Substances 0.000 description 1
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Abstract
The utility model discloses a kind of power transmission tower elastic telescopic sliding sleeve cross-arms, including cross-arm casings on the inside of an outside cross-arm casing, two and the cross arm insulator with inside cross-arm casing connection, described two inside cross-arm casings are movably arranged at outside cross-arm casing axial sides, are equipped in the outside cross-arm casing and inside cross-arm casing connection and can the flexible axial elasticity body of axial elasticity.The technical solution adopted in the utility model, when the wire tension of anchor support side transfinites, make inside cross-arm casing elongation by axial elasticity body, effectively inhibit conducting wire unbalanced tensile force, after the tension that transfinites disappears, still the unbalanced tensile force for solving the problems, such as transmission line of electricity can be can be very good by axial elasticity body automatic homing.
Description
Technical field
The utility model relates to technical field of electric power construction, and in particular to transmission line safety guard technology.
Background technique
Transmission line of electricity ice damage accident can divide four classes: 1. overload accident by the immediate cause analysis of generation, i.e. route is practical
Icing is more than design anti-ice thickness, that is, transmission line icing quality increases, wind area increases after icing, so as to cause mechanically and electrically
Accident in terms of gas；2. uneven icing or the not same period deice the accident of caused mechanically and electrically aspect；3. insulator chain covers
Ice is excessive or is bridged by ice slush, and the reduction of insulator chain electric property is caused；4. conductor galloping accident caused by uneven icing.
Ice area transmission line of electricity is repeated due to being influenced by various external force, such as: due to span, height difference great disparity, icing,
The factors such as uneven are deiced, so that the two sides of steel tower are by unbalanced tensile force, so as to cause steel tower (especially suspended pattern straight line
Tower) there is part or full tower destruction.Once steel tower occurs tilting or tower, two sides steel tower will result in by bigger imbalance
Tension and impact force, it is serious to will lead to continuously tower.The importance for repeating ice area anchor support is above tangent tower, if
The structure for occurring anchor support destroys, cross-arm displacement even tower, often causes the destruction of adjacent tangent tower, and then lead to strain insulator
The chain destruction of all tangent towers in section, extreme case is to influence next strain section, until reinforced anchor support is just able to
Stop, to the destruction of power grid greatly, repairing difficulty it is high, it is power transmission line that the cost of reconstruction is very big, and the time of power failure is also longer
Road icing destroys most extreme one of form.
Experience is destroyed according to previous icing overhead line structures structure, the frequency of the strain rod tower appearance of falling tower is lower than tangent tower,
This is because the structural strength of anchor support is much larger than tangent tower, safety margin when design is also higher compared with tangent tower.Unevenly cover
It is very close, and the difference of the design value of the unbalanced tensile force of two types shaft tower that probability on two class shaft towers, which occurs, for ice
Away from the difference for being less than its structural strength, i other words tangent tower is often prior to its destruction before anchor support destruction.
For the available alleviation of tension for being subject to anchor support side conducting wire, increasing wire length when load is more than certain value can
To reach, but the deformation of conducting wire has been contemplated that when icing calculates tension, therefore it is more feasible for increasing fitting string length.Base
In above-mentioned consideration, strain insulator-string (elastic device) deformable when by tension is accounted for.
Utility model content
Technical problem to be solved in the utility model is just to provide a kind of power transmission tower elastic telescopic sliding sleeve cross-arm,
Solve the problems, such as the unbalanced tensile force of transmission line of electricity.
In order to solve the above technical problems, the utility model adopts the following technical solution: power transmission tower elastic telescopic sliding sleeve
Pipe cross-arm, including an outside cross-arm casing, two inside cross-arm casings and cross arm insulator with inside cross-arm casing connection,
Described two inside cross-arm casings are movably arranged at outside cross-arm casing axial sides, are equipped with and inside in the outside cross-arm casing
Cross-arm casing connection and can the flexible axial elasticity body of axial elasticity, under unbalanced tensile force effect, inside cross-arm casing is stretched
Axial elasticity body and extend, unbalanced tensile force disappear after inside cross-arm casing axial elasticity body effect under return.
Preferably, hemispherical card slot is arranged in the inner wall of the outside cross-arm casing, and the inside cross-arm casing is equipped with can
Spherical buckle radial elastic flexible radial elastomeric and connect with radial elastomeric, it is described spherical to be buckled in normal condition
It is lower to be engaged with hemispherical card slot.
Preferably, the mouth inner wall of the outside cross-arm casing also is provided with hemispherical card slot.
Preferably, the outside cross-arm casing and inside cross-arm casing are made of steel pipe.
Preferably, the axial elasticity body and radial elastomeric are spring.
Preferably, the middle part of the outside cross-arm casing is equipped with partition, and an axial elasticity is respectively set in the partition two sides
Body, the partition are connect with the end of axial elasticity body.
The technical solution adopted in the utility model passes through axial elasticity body when the wire tension of anchor support side transfinites
Make inside cross-arm casing elongation, effectively inhibits conducting wire unbalanced tensile force.After the tension that transfinites disappears, it can still pass through axial elasticity body
Automatic homing can be very good the unbalanced tensile force for solving the problems, such as transmission line of electricity.
Detailed description of the invention
The utility model is further described with reference to the accompanying drawings and detailed description:
Fig. 1 is the utility model structural schematic diagram in normal state；
Fig. 2 is the utility model structural schematic diagram in a stretched state；
Fig. 3 is the utility model in limit of stretch state flowering structure schematic diagram；
Fig. 4 is the spherical structural schematic diagram for being caught in hemispherical card slot；
Fig. 5 is the structural schematic diagram after spherical buckle is detached from hemispherical card slot.
Specific embodiment
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The utility model will be described in detail below with reference to the accompanying drawings and embodiments.
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Be to the description only actually of at least one exemplary embodiment below it is illustrative, never as to this is practical
Novel and its application or any restrictions used.Based on the embodiments of the present invention, those of ordinary skill in the art are not having
Every other embodiment obtained under the premise of creative work is made, is fallen within the protection scope of the utility model.
Electric power line pole tower be more than design value or be other uneven icing due to caused by the super design of unbalanced tensile force
When value, by certain induction mechanism, it is down in the range of design consideration, reaches a new balance, thus by uneven
Tension force is in the acceptable range of design, to ensure the safety of transmission line of electricity.It realizes through a variety of ways, final mesh
Be unbalanced tensile force in order to reduce shaft tower two sides, the mechanism of action can be generally divided into following three kinds:
1., reduce hightension side grounded-line tension value, the tension value of small tension receiving coil side grounded-line is constant, to reduce shaft tower
The unbalanced tensile force of two sides；
2., reduce the tension value of hightension side grounded-line, while reducing the tension value of small tension receiving coil side grounded-line, but hightension
The drop-out value of side is greater than small tension receiving coil side, to reduce the unbalanced tensile force of shaft tower two sides；
3., the tension value of hightension side grounded-line reduce or constant, while improving the tension value of small tension receiving coil side grounded-line, from
And reduce the unbalanced tensile force of shaft tower two sides.
The utility model is based on the above mechanism of action and is designed, and can be very good the imbalance for solving transmission line of electricity
Strain problem.
Shown in referring to figs. 1 to Fig. 3, power transmission tower elastic telescopic sliding sleeve cross-arm, including an outside cross-arm casing 1, two
A inside cross-arm casing 2 and the respectively cross arm insulator 3 with two inside cross-arm casing connections, described two inside cross-arm sets
Pipe 2 is movably arranged at 1 axial sides of outside cross-arm casing, and cross arm insulator 3 is connect with 2 axial outer end side of inside cross-arm casing,
Be equipped in the outside cross-arm casing 1 connect with inside cross-arm casing 2 and can the axial elasticity body 11 that stretches of axial elasticity, not
Under balance tension effect, inside cross-arm casing 2 stretches axial elastomer 11 and extends, inside cross-arm set after unbalanced tensile force disappears
The return under the effect of axial elasticity body 11 of pipe 2.
With reference to shown in Fig. 4 and Fig. 5, hemispherical card slot 13, the inside cross-arm is arranged in the inner wall of the outside cross-arm casing 1
Casing 2 is equipped with the spherical buckle 22 that can radial elastic flexible radial elastomeric 21 and connect with radial elastomeric.
Wherein, the inner wall of outside cross-arm casing 1 is close at least one circumferentially distributed hemispherical card slot 13 of medium position,
It also circumferentially is provided at least one hemispherical card slot 13 in mouth inner wall, 2 head of inside cross-arm casing and tail portion are respectively arranged one group
Spherical buckle 22.
Refering to what is shown in Fig. 1, the spherical buckle 22 of 2 head of inside cross-arm casing and tail portion is in radial elastic under normal condition
Under 21 elastic reaction of body, it is respectively clamped into close to the hemispherical card slot 13 of medium position and the hemispherical card slot 13 of mouth inner wall.
Refering to what is shown in Fig. 2, spherical buckle 22 is detached from hemispherical card slot 13 when the wire tension of anchor support side transfinites,
Extend inside cross-arm casing 2 by axial elasticity body 11, to effectively inhibit conducting wire unbalanced tensile force.
Refering to what is shown in Fig. 3, the spherical buckle 22 of 2 tail portion of inside cross-arm casing is in radial elastomeric 21 under limiting condition
The hemispherical card slot 13 of mouth inner wall is caught under elastic reaction.
After the tension that transfinites disappears, inside cross-arm casing 2 can be replied shown in Fig. 1 by 11 automatic homing of axial elasticity body
Normal condition.
In normal state, acted on by radial elastomeric 21, spherical buckle 22 be engaged with hemispherical card slot 13 prevent it is interior
2 malfunction of side cross-arm casing.
The oral area of cross-arm casing 1 on the outside, after outside cross-arm casing 1 is engaged by spherical buckle 22 with hemispherical card slot 13
It is contacted with inside cross-arm casing 2, on the one hand the radial support as inside cross-arm casing, on the other hand in inside, cross-arm casing is stretched
Friction is reduced in compression process, prevents the abrasion in cross-arm exit.
In the present embodiment, the outside cross-arm casing 1 and inside cross-arm casing 2 are made of steel pipe.The axial direction bullet
Property body 11 and radial elastomeric 21 are spring.
In addition, the middle part of the outside cross-arm casing is equipped with partition 12, an axial bullet is respectively set in 12 two sides of partition
Property body 11, connected respectively with corresponding two insides cross-arm casing 2, and the partition 12 is connect with the end of axial elasticity body.
The spring type cross-arm for being designed as controllable extensible that the utility model innovates traditional angle steel type cross-arm effectively controls
Mechanical destruction caused by conducting wire unbalanced tensile force, inside cross-arm casing is scalable by external force, and external force can be certainly after disappearing
Dynamic playback, therefore, has the following beneficial effects:
1, the effect of unbalanced tensile force can be effectively suppressed.
2, elastic strain cross arm can reduce anchor support unilateral side wire tension by the variation of strain insulator string length, while also indirectly
Anchor support two sides unbalanced tensile force is reduced, the destruction of anchor support is prevented.
3, elastic cross-arm is no different with conventional cross-arm under normal operating conditions, is not all influenced on the construction of route operation,
Only just start to act on when tension is more than setting limit value, for inhibiting the biggish tension tower conducting wire tension overrunning of corner degree to have very
Good effect.
4, when practical application, tower can be reduced under the premise of degree of safety is constant and weigh about 8%~15%, if tower weight is constant,
The safety stock of shaft tower can be greatly improved.
In addition to above preferred embodiment, for the utility model there are also other embodiments, those skilled in the art can root
It is made various changes and modifications according to the utility model, without departing from the spirit of the utility model, should belong to the utility model
Range defined in claims.
Claims (6)
1. power transmission tower elastic telescopic sliding sleeve cross-arm, it is characterised in that: including an outside cross-arm casing, two inside cross-arms
Casing and cross arm insulator with inside cross-arm casing connection, described two inside cross-arm casings are movably arranged at outside cross-arm set
Pipe axial sides are equipped in the outside cross-arm casing and inside cross-arm casing connection and can the flexible axial elasticity of axial elasticity
Body, under unbalanced tensile force effect, inside cross-arm casing stretches axial elastomer and extends, and inside is horizontal after unbalanced tensile force disappears
Carry on a shoulder pole casing return under the effect of axial elasticity body.
2. power transmission tower according to claim 1 elastic telescopic sliding sleeve cross-arm, it is characterised in that: the outside cross-arm
The inner wall of casing is arranged hemispherical card slot, the inside cross-arm casing be equipped with can the flexible radial elastomeric of radial elastic and
The spherical buckle connecting with radial elastomeric, the spherical buckle are engaged with hemispherical card slot in normal state.
3. power transmission tower according to claim 2 elastic telescopic sliding sleeve cross-arm, it is characterised in that: the outside cross-arm
The mouth inner wall of casing also is provided with hemispherical card slot.
4. power transmission tower according to claim 3 elastic telescopic sliding sleeve cross-arm, it is characterised in that: the outside cross-arm
Casing and inside cross-arm casing are made of steel pipe.
5. power transmission tower according to claim 4 elastic telescopic sliding sleeve cross-arm, it is characterised in that: the axial elasticity
Body and radial elastomeric are spring.
6. power transmission tower according to claim 1 elastic telescopic sliding sleeve cross-arm, it is characterised in that: the outside cross-arm
The middle part of casing is equipped with partition, and an axial elasticity body, the end of the partition and axial elasticity body is respectively set in the partition two sides
Portion's connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820700955.1U CN208236074U (en) | 2018-05-11 | 2018-05-11 | Power transmission tower elastic telescopic sliding sleeve cross-arm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820700955.1U CN208236074U (en) | 2018-05-11 | 2018-05-11 | Power transmission tower elastic telescopic sliding sleeve cross-arm |
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| Publication Number | Publication Date |
|---|---|
| CN208236074U true CN208236074U (en) | 2018-12-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820700955.1U Active CN208236074U (en) | 2018-05-11 | 2018-05-11 | Power transmission tower elastic telescopic sliding sleeve cross-arm |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113594961A (en) * | 2021-07-15 | 2021-11-02 | 国网宁夏电力有限公司培训中心 | New-type flexible interim cross arm device of hand formula of 10kV net distribution live working |
-
2018
- 2018-05-11 CN CN201820700955.1U patent/CN208236074U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113594961A (en) * | 2021-07-15 | 2021-11-02 | 国网宁夏电力有限公司培训中心 | New-type flexible interim cross arm device of hand formula of 10kV net distribution live working |
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